png_set_error_fn
Name
png_set_error_fn -- set user defined functions for error handling
Synopsis
void
png_set_error_fn
(png_structp
png_ptr, png_voidp
error_ptr, png_error_ptr
error_fn, png_error_ptr
warning_fn);
Description
png_set_error_fn() shall replace the default error handling and warning
functions with user defined function error_fn for handling fatal errors and
function warning_fn for handling non-fatal errors. The replacement functions
must do a longjmp to the last setjmp location if setjmp/longjmp method of error
handling is used. If error_fn or warning_fn is NULL, the default functions for
error handling shall be used.